UPDATE (1:14 p.m.):
According to an email from Davis-Monthan, the closure was the result of a power outage that lasted about 20 minutes.
The email said, "As a standard safety and security protocol during a loss of power, our Security Forces members temporarily closed the gates to ensure the continued security of the installation. Power has since been restored, and normal gate operations have resumed."
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All gates at Davis-Monthan are closed to inbound and outbound traffic until further notice, according to the Air Force base's Facebook page.
No more information was given.
